Binocular



estelas-di Nov. i7, 192s.'v

A" UNITED STA-Tes:

EEnLnv, cEmrANY. j" VJLBINOC PATIENT. ol-"FlcraA NEAE. BERLIN, GERMANY, As'sIGNon To THE nml or orTIscnE ANsTALT c. r. ooEnz AKTIENGESELLSCHAFT, or EEIEDENAU, NEAE.` Y

ULAE. f,

. Application-mea February VA4,1922. smarrita-534,052.

To allfwlwm it may-comm; c

' Beit known that. I, HEINRICH JAooB',a citizen of the German Republic, and resident of Friedenau, near Berlin, Germany, .have

vinvented certain new and useful Improvementsinand Relating to Binoculars, of which the following is a. specification.

Thisinvention relates to binocularsprol vided with two ocular tubes arra'n at a chanicalstability evenI if its casing vis manu-` cheap manner.

distance from each other and consists in a binocular construction which .is of high me;

facturfed from thin sheet of light metalV such as aluminium and in a process for manufacturing such strong instrument casing in a Theiew binocular construction and the several steps ofmanufacturing its casinlg in accordance' with the 'invention are( ilustrated on the Vaccompanying ldrawing and will hereafter be described with reference tou' the drawing.

Figure f1 is a part central axial section and-a part side elevation. i f Figurej' is a section on the line 2- 2 of Figure 1 looking in the direction of the arrows. rif i -Figures 3 8 illustrate severalsucceeding steps in the manufacture oftheinstrument casing. -J 9, and 10 area plan and acentral axial section of a. decoratinglcover'for .a partofthecasinguA 'Fi re ll'is a side elevation ofthe casing provided with the decorating cover-of Figures -9 and 10,-the decorating cover-partial being shown in section. v

The instrument shown 1n l1 and 2` is a' so-calledaGalilean vbinocular of that kind ter. The casing fhas a spectacles-like cross "3 in afixed manner.

'show only one lobject-glass A'The' support 1 andthe object-glasses are mounted 1n a box-like casing 3 having a cylindrical side `wall which, in theconstruction illustrated, is closed at the .end directed towards the oband encircles` the frontI -endof same' and" closes and at the same time 'stiifens the latv section ;the two circular cylindrical sections at the ends 4of .the casing forming receptacles for the vslidable object glasses ad being connected together by an open space in which the support` 1 of theobject-glasses is adjustablyjmounted. At the eye-piece lend, the `casing 3 has two beaded'rlngs 5 which 'stiften the said casing and intowhich are -inserted ocular or eye-piecetubes 6 which are made separately .from the casing-3. lThe closing of the instrument casing at the end directed towards the object t-be viewedv atv is effected by covering glasses 7 which, according to the drawing, arelconstituted by fiat ldiscs,\but which could. also be spheroconcentricr or of lens shapes 8 is an' eyepiece, lens which is connected te the corr`espending tube 6 in any desired knownA manner. 9 is a screw for moving the object-glass support 1 the. said screw carries outside the casingv a settingbutton .10 and ismounted" inthe central hollows ace of the\boir casing e ocular sided cover] ofthe box casing is provided with a projecting button forming a bearing for screw 9.

'lhe boxcasing 3 i'sinade symmetrical as'l owin 'unsymmetrical jshape disappears@4 Accordject to beviewed at by a cover 4 which is f y 1 a shape4 suited to the shape-.ofthe casing 3 to` the elimination ofthe movable eye-piece bridge, the' reasbn'for the usfualkV whereintle setting of the instrument is'e'ffected by4 shifting the object-glasses within the instrument casing.'- In the construction in accordance with the invention the instru'- mentcasing consists of a nain box-like part wherein the object-glasses are' slidably' mounted and of separate eye-piece tubes which are inserted in said bozflike casing opening yo the object-glass casing is formed in one pi 'edge .fitting the outlines of the. casing andv fulfils atthe same timey the' closing. of "the element' and are fastened thereto l The objectlasses ar mounted on acomm mon support 1. Q 'Ihevi'guresv of the drawing.`

ing to the drawing,'the cover fi for the -wholeL 90 ce and providedwith .an upturied',v 'i

casing-and the 'separate ohiect of s tiening'ili I hand work and mainly by modern methodsl connection between the box-like casin of metal drawing and pressing. To this end the lcasing is manufactured in several separate parts eachof which beine adaptedv to Asimple manufact-ure by mac inery. ,The principal part is the box-likecasing for the object-glasses; two further parts are the ocular tubes which are fitted in openings in the cover of said box-like casing. A fur' ther part of the casing which referably is provided is a cover for the fend) opening of said box casing@ All of these partsA are` adapted to be manufactured `from Sheet metal by drawing and pressing operations, it being specially important that the frx an the ocular tubes likewise can be and 1s effected by a drawn operation namely the tightening of the cylindrical wall of the boxlike casing. l

As to the manufacture ofthe box-like rcasl ing for the object glasses it is effected by suitably shaping a sheet metal blank of `spectacleslike shape, preferably provided with a centre hole as ,illustrated in Figure 3. This plate of sheet metal is at first subjected to the action"VJ of pressing anddrawing tools so as to form therein the contour of the cover -of the box-like casing as illustrated in Figures 4 and. 5 of the drawing. Thereafter by successive drawing operations the free edge of the sheet-metal plate is formed into a cylin` dri'cal wall of spectacles-likecross section, so as to bring the sheet blank of Figure 3 into-the casing form of Figure 6. Then the cover of such casing is provided with two lateral holes each concentric to one of the circular cylindrical sections at each end of vso the casing,giving the casing the form illus- `trated in'Figure 7.-'Then coiCal ocular beaded rings in tight embracement with saidl beaded rings 5 of the casing. Thus the conical ocular tubes 6 are firmly connected with the box-like casing. `At the same time the casing is highly stiifened. The manner of connection between the casing and the ocular tubes can be clearly vseen from Figures 1 and 8 of the drawing. In

a -preferred embodiment the tightening of the-cylindrical wall of the casing is extended through the wholecircumference of the casing so that a continuous beaded ring v around the ocular sided edge of the casing is formed as appearing in Figure 8 of the drawing. This giving a valuable stiffening `metal coatings.

tween the lateral circular cylindrical parts. Within the casing manufacturedas above described the optical elements of the binocular are mounted; This being done the open. end of the box-like casing is closed by a suitably shaped cover allowing the entrance of light in the direction towards the objectglasses.

ccording to Figures `1 and 2 a cove1r4: is used which is likewise `made .of sheet metal by ,pressing operations and which has an upturned edge encircling the free edge `of* the cylindrical wall of the box-like casing. The cover 4 has ahigh stifenin'g effect similarl to the beaded ring 5 at the upper edge of t e casing. As appearing from Figureil the coyer 4 may be used for pressing the mountings of plates 7 against the lower edge i of the box-like casing.

It is tobe noted that the scribed method of manufacturing the'binocular casing secures high strength and rigidity even if the casing is manufactured of light metal such as aluminium because the several elements are hardened by the drawin process andthe whole casing stili'ened y the beaded ring 5 and the coverd as( above stated.

However,l Alight metal such as aluminium' can not be provided in a reliable manner with afirmly adhering coating of precious metal such as gold, so that there exists some Adifficulty to make instruments 'with casing light in weight in accordance with this invention which are decorated with precious In accordance-with a fur- .ther part ofV this invention this difficulty can previously l debe overcome by providing .a separate decorating part of thin sheet metal of spectacles like Ishape and exactly the same configuration as the upper cover of the box-like casing and by fastening it on said cover by bending its edge about the'beaded ring 5. Such spectacleslike shaped decorating part is illustrated in Figures 9 and 10-of the drawing whereas Figure 11 shows itafter mounting on the'casingillustrated in Figure 8. Such decorating part may either consist of heavy sheet metal vsuch as briss and suitably decorated` for instanceby `an electrolytic deposit of gold etc. or of a thin sheet of precious metal. I The frontcover 4 of the casing may be decorated in the same wayas the rear cover of the casing. v

-A special advantage of the newmanner of manufacturing the binocular casing con-V sists therein that the number of'parts required is reduced to 'abouti one half of the number of parts hithertorequired in the' object-glasses a box-like casing, twoobjectlO g edge of the casing and encirc f cent edgeV ofan v (,xxuartube so as to secure '1t in posltion,

' .glasses axially shiftably mountedtherein in guiding contact end to en and two ocular tubes separately and firmly mounted within said object glass casing at a .distance froml `each other` in,

' alignment with said object glasses.

l of object rier.- axially end to Aen casing at a. f "of the cover of the box-like for 'each ocular tube a beaded ring portion 'eil'tircling the lower edge of the ocular tube an casingl.. o A

' '4. a1-binocular a box-like casing two` object glasses, 'a carmen 'for same, sal car- `distance from each other, the

s a In a binocular a box-like casing, @par shiftable within said casing from and two ocular tubes separately mounted within said object-glam `and firmly distance from each other, the edge securing it position said rier with the object glasses shiftable from end'to end of said casing without rotation therein; and two .ocular tubes mounted within said object-glass attha o e cover of the box-like containing the ocular tubes being formed ma beaded ring continuously surrounding the whole. casing and projecting above thelteral wall vof vthe casing, portions'of said projhecting beaded ring of the casin .encircling t e lower edges. `ofthe oculartu and securing them in position within saidcasilg., f l

5. In a binocular a awn thinywalled sheet metal casing of spectacles-like cross section land substantially cylindrical side wall, a central adjust' screw rotatabl mount.-

' ed within saidcasing and provide with an l operating handle or knob? outsidethel casing, a carrier shiftably mounted on said adjusting screw within said casin and hav' fastened thereto the ,ch

I .ject-g asses-slidab e substantially circular lateral Acylindrical portions of the cas metal conical ocular tu ing, lthe -cover of the drawn sheet metal casing provided with lateral openings align-k ment witha theobjectlasses, f drawn sheet i inserted said lateral openings'of the -cover of the objectglass caSm'g, a beaded 'ring pro;ectin g over the lateral wall of'said the g the da firmly 'object-sided end of s aid ob'ect-glass casing hermetically sealing-it, sai cover allowing glasses mounted on -a common car# containing {separately-N but non rotatablyr and acover for the entrance of light at places in. frnt ofthe object-glasses. .f

6. In a. binocular. a drawnvtliin-walled sheet metal vcasing of 'spectacles-like cr0s's' section and substantially cylindrical side wall, a central adjusting screw rotatably mountedwithin said casing and provided with an operating handle or knob outside the casing, a carrler shiftably butl non rotatably mounted on said adjusting screw with drawn sheet metal conical ocular tu s in.

scrtedinsaid lateral openings offthe. cover 'jecting over-the lateral wall of said casing `forming the "edge ofthe' casing andencircling the adjacent edge oan oculartubeso as to iirmly'secure it in-position, and a sheet metal cover having an upturned edge for the object-sided end of said object-glass casing the upturned edgelof the cover tightly embracin the lower edge of the side wall of the casing, the cover. hermetically sealing the inner cavit of the casing, but allowingV the entrance o -light 'e at places in front o. ob'ect-glasses. In a binocular sheet metal casing-of spectacles-likevcross section and substantially cylindrical -side wall, a central adjusting screw rotatably mounted lthe of the object-glass casing, a beaded'ring pro: i.

imi

a ,drawn thin-walled l within said casing, a member comprising the lob'ect-glasses mounted on said screw and ainally shiftable within said'casing, `a cen-- tra] projection 'on the cover of the drawn sheet metal casing forming a bearing for 'said adjusting screw and Acarrying on its top side a screw actuatingV knob fixed on l.sa-1d screw, the casing cover. being -provided glate'rally to said projection and screw actuatin alignment withr the .object-glasses, drawn sheet metal coni- 'ing knob with openings/ ca l Voculartubes inserted in said lateral 'openings of the-cover of theobjectf' lass cas# ing, a beaded ring projecting over t e lateral wall of said cas' forming the edge ofthe casing and en'cii'neiig the' ad'acent edge of an ocular' tube so as'tolirm y secure 1t in position, and

upturncd 'ed e for lthe object-sided Ae saidf-,bjeet-g ass casing, the upturned-'edge l ofthe cover .tightl embracing' "the lower edge ofthe side wa of the casingnthe cozzlr hermetically sealing the inner cavity of casing,'but. allowin "the entrance of light at places inifrontof t e object-glasses. 8. In a'binocular provided with obqe'ct and -ocularglasses in axial alignment with each li ht'metal ha v a *substantiall c 1indigical side .wall and closed at one fnd .wi f

Y l I a sheet met-al cover having n o other in combination a box-likev casing of 4a cover in one piece with the side wall the cover provided with two substantially circular openings :it a distance from each other a sheet metal decorated part made of heavy metal superposed on Said cover, tWoV ocular tubes'rmly mounted in said lateral open L decorated part and an object glass carrier mounted within the cavity of said casing allowing shifting of the object glass from 1o end to end of said casing.

In testimony whereof I have signed this Y specification.

" HEINRICH J AiCOB. 

